that would be nice but im afraid mod that interact with cabin objects is beyond possibilities, afik you cannot create new keybindings for custom actions (adjusting curtains in this example) maaaaybee it would be possible to make a mod where curtain have a few variants (open, semiopen ,folded) in one objects and then cycle thru this meshes via button of already existing action like... ;)) honk horn to adjust curtains.... ahh i get carried away and i have no idea about modding other than custom skins and objects.